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@ -9,522 +9,6 @@ sharing: true
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---
Home Assistant runs a web server accessible on port 8123.
* http://IP_ADDRESS:8123/ is an interface to control Home Assistant.
* http://IP_ADDRESS:8123/api/ is a Rest API.
The API accepts and returns only JSON encoded objects. All API calls have to be accompanied by the header `X-HA-Access: YOUR_PASSWORD` (YOUR_PASSWORD as specified in your `configuration.yaml` file in the [`http:` section](/components/http/)).
If you are not using the [`frontend`](/components/frontend/) in your setup then you need to add the [`api` component](/components/api/) to your `configuration.yaml` file.
There are multiple ways to consume the Home Assistant Rest API. One is with `curl`:
```bash
curl -X GET \
-H "x-ha-access: YOUR_PASSWORD" \
-H "Content-Type: application/json" \
http://IP_ADDRESS:8123/ENDPOINT
```
Another option is to use Python and the [Requests](http://docs.python-requests.org/en/latest/) module. =
```python
from requests import get
url = 'http://localhost:8123/ENDPOINT'
headers = {'x-ha-access': 'YOUR_PASSWORD',
'content-type': 'application/json'}
response = get(url, headers=headers)
print(response.text)
```
<p class='note'>
You can append `?api_password=YOUR_PASSWORD` to any URL to log in automatically.
</p>
Successful calls will return status code 200 or 201. Other status codes that can return are:
- 400 (Bad Request)
- 401 (Unauthorized)
- 404 (Not Found)
- 405 (Method not allowed)
### {% linkable_title Actions %}
The API supports the following actions:
#### {% linkable_title GET /api/ %}
Returns a message if the API is up and running.
```json
{
"message": "API running."
}
```
Sample `curl` command:
```bash
$ curl -X GET -H "x-ha-access: YOUR_PASSWORD" \
-H "Content-Type: application/json" http://localhost:8123/api/
```
#### {% linkable_title GET /api/config %}
Returns the current configuration as JSON.
```json
{
"components":[
"sensor.cpuspeed",
"frontend",
"config.core",
"http",
"map",
"api",
"sun",
"config",
"discovery",
"conversation",
"recorder",
"group",
"sensor",
"websocket_api",
"automation",
"config.automation",
"config.customize"
],
"config_dir":"/home/ha/.homeassistant",
"elevation":510,
"latitude":45.8781529,
"location_name":"Home",
"longitude":8.458853651,
"time_zone":"Europe/Zurich",
"unit_system":{
"length":"km",
"mass":"g",
"temperature":"\u00b0C",
"volume":"L"
},
"version":"0.56.2",
"whitelist_external_dirs":[
"/home/ha/.homeassistant/www",
"/home/ha/.homeassistant/"
]
}
```
Sample `curl` command:
```bash
$ curl -X GET -H "x-ha-access: YOUR_PASSWORD" \
-H "Content-Type: application/json" http://localhost:8123/api/config
```
#### {% linkable_title GET /api/discovery_info %}
Returns basic information about the Home Assistant instance as JSON.
```json
{
"base_url": "http://192.168.0.2:8123",
"location_name": "Home",
"requires_api_password": true,
"version": "0.56.2"
}
```
Sample `curl` command:
```bash
$ curl -X GET -H "x-ha-access: YOUR_PASSWORD" \
-H "Content-Type: application/json" http://localhost:8123/api/discovery_info
```
#### {% linkable_title GET /api/events %}
Returns an array of event objects. Each event object contains event name and listener count.
```json
[
{
"event": "state_changed",
"listener_count": 5
},
{
"event": "time_changed",
"listener_count": 2
}
]
```
Sample `curl` command:
```bash
$ curl -X GET -H "x-ha-access: YOUR_PASSWORD" \
-H "Content-Type: application/json" http://localhost:8123/api/events
```
#### {% linkable_title GET /api/services %}
Returns an array of service objects. Each object contains the domain and which services it contains.
```json
[
{
"domain": "browser",
"services": [
"browse_url"
]
},
{
"domain": "keyboard",
"services": [
"volume_up",
"volume_down"
]
}
]
```
Sample `curl` command:
```bash
$ curl -X GET -H "x-ha-access: YOUR_PASSWORD" \
-H "Content-Type: application/json" http://localhost:8123/api/services
```
#### {% linkable_title GET /api/history/period/&lt;timestamp> %}
Returns an array of state changes in the past. Each object contains further details for the entities.
The `<timestamp>` (`YYYY-MM-DDThh:mm:ssTZD`) is optional and defaults to 1 day before the time of the request. It determines the beginning of the period.
You can pass the following optional GET parameters:
- `filter_entity_id=<entity_id>` to filter on a single entity
- `end_time=<timestamp>` to choose the end of the period in URL encoded format (defaults to 1 day).
```json
[
[
{
"attributes": {
"friendly_name": "Weather Temperature",
"unit_of_measurement": "\u00b0C"
},
"entity_id": "sensor.weather_temperature",
"last_changed": "2016-02-06T22:15:00+00:00",
"last_updated": "2016-02-06T22:15:00+00:00",
"state": "-3.9"
},
{
"attributes": {
"friendly_name": "Weather Temperature",
"unit_of_measurement": "\u00b0C"
},
"entity_id": "sensor.weather_temperature",
"last_changed": "2016-02-06T22:15:00+00:00",
"last_updated": "2016-02-06T22:15:00+00:00",
"state": "-1.9"
},
]
]
```
Sample `curl` commands:
```bash
$ curl -X GET -H "x-ha-access: YOUR_PASSWORD" \
-H "Content-Type: application/json" \
http://localhost:8123/api/history/period/2016-12-29T00:00:00+02:00
```
```bash
$ curl -X GET -H "x-ha-access: YOUR_PASSWORD" \
-H "Content-Type: application/json" \
http://localhost:8123/api/history/period/2016-12-29T00:00:00+02:00?filter_entity_id=sensor.temperature
```
```bash
$ curl -X GET -H "x-ha-access: YOUR_PASSWORD" \
-H "Content-Type: application/json" \
http://localhost:8123/api/history/period/2016-12-29T00:00:00+02:00?end_time=2016-12-31T00%3A00%3A00%2B02%3A00
```
#### {% linkable_title GET /api/states %}
Returns an array of state objects. Each state has the following attributes: entity_id, state, last_changed and attributes.
```json
[
{
"attributes": {},
"entity_id": "sun.sun",
"last_changed": "2016-05-30T21:43:32.418320+00:00",
"state": "below_horizon"
},
{
"attributes": {},
"entity_id": "process.Dropbox",
"last_changed": "22016-05-30T21:43:32.418320+00:00",
"state": "on"
}
]
```
Sample `curl` command:
```bash
$ curl -X GET -H "x-ha-access: YOUR_PASSWORD" \
-H "Content-Type: application/json" http://localhost:8123/api/states
```
#### {% linkable_title GET /api/states/&lt;entity_id> %}
Returns a state object for specified entity_id. Returns 404 if not found.
```json
{
"attributes":{
"azimuth":336.34,
"elevation":-17.67,
"friendly_name":"Sun",
"next_rising":"2016-05-31T03:39:14+00:00",
"next_setting":"2016-05-31T19:16:42+00:00"
},
"entity_id":"sun.sun",
"last_changed":"2016-05-30T21:43:29.204838+00:00",
"last_updated":"2016-05-30T21:50:30.529465+00:00",
"state":"below_horizon"
}
```
Sample `curl` command:
```bash
$ curl -X GET -H "x-ha-access: YOUR_PASSWORD" \
-H "Content-Type: application/json" \
http://localhost:8123/api/states/sensor.kitchen_temperature
```
#### {% linkable_title GET /api/error_log %}
Retrieve all errors logged during the current session of Home Assistant as a plaintext response.
```text
15-12-20 11:02:50 homeassistant.components.recorder: Found unfinished sessions
15-12-20 11:03:03 netdisco.ssdp: Error fetching description at http://192.168.1.1:8200/rootDesc.xml
15-12-20 11:04:36 homeassistant.components.alexa: Received unknown intent HelpIntent
```
Sample `curl` command:
```bash
$ curl -X GET -H "x-ha-access: YOUR_PASSWORD" \
-H "Content-Type: application/json" \
http://localhost:8123/api/error_log
```
#### {% linkable_title GET /api/camera_proxy/camera.&lt;entity_id> %}
Returns the data (image) from the specified camera entity_id.
Sample `curl` command:
```bash
$ curl -X GET -H "x-ha-access: YOUR_PASSWORD" \
-H "Content-Type: application/json" \
http://localhost:8123/api/camera_proxy/camera.my_sample_camera?time=1462653861261 -o image.jpg
```
#### {% linkable_title POST /api/states/&lt;entity_id> %}
Updates or creates the current state of an entity.
Expects a JSON object that has at least a state attribute:
```json
{
"state": "below_horizon",
"attributes": {
"next_rising":"2016-05-31T03:39:14+00:00",
"next_setting":"2016-05-31T19:16:42+00:00"
}
}
```
The return code is 200 if the entity existed, 201 if the state of a new entity was set. A location header will be returned with the URL of the new resource. The response body will contain a JSON encoded State object.
```json
{
"attributes": {
"next_rising":"2016-05-31T03:39:14+00:00",
"next_setting":"2016-05-31T19:16:42+00:00"
},
"entity_id": "sun.sun",
"last_changed": "2016-05-30T21:43:29.204838+00:00",
"last_updated": "2016-05-30T21:47:30.533530+00:00",
"state": "below_horizon"
}
```
Sample `curl` command:
```bash
$ curl -X POST -H "x-ha-access: YOUR_PASSWORD" \
-H "Content-Type: application/json" \
-d '{"state": "25", "attributes": {"unit_of_measurement": "°C"}}' \
http://localhost:8123/api/states/sensor.kitchen_temperature
```
#### {% linkable_title POST /api/events/&lt;event_type> %}
Fires an event with event_type
You can pass an optional JSON object to be used as `event_data`.
```json
{
"next_rising":"2016-05-31T03:39:14+00:00",
}
```
Returns a message if successful.
```json
{
"message": "Event download_file fired."
}
```
#### {% linkable_title POST /api/services/&lt;domain>/&lt;service> %}
Calls a service within a specific domain. Will return when the service has been executed or after 10 seconds, whichever comes first.
You can pass an optional JSON object to be used as `service_data`.
```json
{
"entity_id": "light.Ceiling"
}
```
Returns a list of states that have changed while the service was being executed.
```json
[
{
"attributes": {},
"entity_id": "sun.sun",
"last_changed": "2016-05-30T21:43:32.418320+00:00",
"state": "below_horizon"
},
{
"attributes": {},
"entity_id": "process.Dropbox",
"last_changed": "22016-05-30T21:43:32.418320+00:00",
"state": "on"
}
]
```
Sample `curl` commands:
Turn the light on:
```bash
$ curl -X POST -H "x-ha-access: YOUR_PASSWORD" \
-H "Content-Type: application/json" \
-d '{"entity_id": "switch.christmas_lights"}' \
http://localhost:8123/api/services/switch/turn_on
```
Send a MQTT message:
```bash
$ curl -X POST \
-H "Content-Type: application/json" \
-H "x-ha-access:YOUR_PASSWORD" \
-d '{"payload": "OFF", "topic": "home/fridge", "retain": "True"}' \
http://localhost:8123/api/services/mqtt/publish
```
<p class='note'>
The result will include any states that changed while the service was being executed, even if their change was the result of something else happening in the system.
</p>
#### {% linkable_title POST /api/template %}
Render a Home Assistant template. [See template docs for more information.](/topics/templating/)
```json
{
"template": "Paulus is at {% raw %}{{ states('device_tracker.paulus') }}{% endraw %}!"
}
```
Returns the rendered template in plain text.
```text
Paulus is at work!
```
Sample `curl` command:
```bash
$ curl -X POST -H "x-ha-access: YOUR_PASSWORD" \
-H "Content-Type: application/json" \
-d '{"template": "It is {{ now }}!"}' http://localhost:8123/api/template
```
#### {% linkable_title POST /api/event_forwarding %}
Set up event forwarding to another Home Assistant instance.
Requires a JSON object that represents the API to forward to.
```javascript
{
"host": "machine",
"api_password": "my_super_secret_password",
"port": 8880 // optional
}
```
It will return a message if event forwarding was set up successfully.
```json
{
"message": "Event forwarding setup."
}
```
#### {% linkable_title DELETE /api/event_forwarding %}
Cancel event forwarding to another Home Assistant instance.<br>
Requires a JSON object that represents the API to cancel forwarding to.
```javascript
{
"host": "machine",
"api_password": "my_super_secret_password",
"port": 8880 // optional
}
```
It will return a message if event forwarding was canceled successfully.
```json
{
"message": "Event forwarding cancelled."
}
```
<p class='note'>
If your client does not support <code>DELETE</code> HTTP requests you can add an optional attribute <code>_METHOD</code> and set its value to <code>DELETE</code>.
</p>
<script>
window.location = 'https://developers.home-assistant.io/docs/en/external_api_rest.html';
</script>